345677 has 4 divisors (see below), whose sum is σ = 353760. Its totient is φ = 337596.

The previous prime is 345673. The next prime is 345679. The reversal of 345677 is 776543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345677 - 2² = 345673 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 345677.

It is not an unprimeable number, because it can be changed into a prime (345673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3977 + ... + 4062.

It is an arithmetic number, because the mean of its divisors is an integer number (88440).

2³⁴⁵⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

345677 is a deficient number, since it is larger than the sum of its proper divisors (8083).

345677 is an equidigital number, since it uses as much as digits as its factorization.

345677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082.

The product of its digits is 17640, while the sum is 32.

The square root of 345677 is about 587.9430244505. The cubic root of 345677 is about 70.1816371210.

The spelling of 345677 in words is "three hundred forty-five thousand, six hundred seventy-seven".